CHG: 'lf t55xx wipe c' - now accepts user provided configuration block to configure a wiped tag with.

ADD: 'lf t55xx protect' -  Sets password and enables password protection in configuration block.   It tries to validate its writes aswell.

Samples:
lf t55xx protect n 11223344            - set pwd to 11223344
lf t55xx protect n 01020304 p 11223344 - change a password protected tag from 11223344 to 01020304

To remove the password protection, you need to remember the password :)
lf t55xx wipe p 11223344               - wipes whole tag, removes password protection bits.
This commit is contained in:
iceman1001 2019-09-14 18:27:58 +02:00
parent c3bdf3e70f
commit da197e1999
2 changed files with 343 additions and 137 deletions

View file

@ -87,7 +87,6 @@ static int usage_t55xx_config() {
PrintAndLogEx(NORMAL, " ST [0/1] - Set/reset Sequence Terminator on");
PrintAndLogEx(NORMAL, ""); // layout is a little differnet, so seperate until a better fix
print_usage_t55xx_downloadlink(T55XX_DLMODE_SINGLE);
PrintAndLogEx(NORMAL, "fix this code....");
PrintAndLogEx(NORMAL, "");
PrintAndLogEx(NORMAL, "Examples:");
PrintAndLogEx(NORMAL, " lf t55xx config d FSK - FSK demodulation");
@ -97,7 +96,7 @@ static int usage_t55xx_config() {
return PM3_SUCCESS;
}
static int usage_t55xx_read() {
PrintAndLogEx(NORMAL, "Usage: lf t55xx read [r <mode>] b <block> [p <password>] <override_safety> <page1>");
PrintAndLogEx(NORMAL, "Usage: lf t55xx read [r <mode>] b <block> [p <password>] [o] <page1>");
PrintAndLogEx(NORMAL, "Options:");
PrintAndLogEx(NORMAL, " b <block> - block number to read. Between 0-7");
PrintAndLogEx(NORMAL, " p <password> - OPTIONAL password (8 hex characters)");
@ -271,33 +270,36 @@ static int usage_t55xx_recoverpw() {
PrintAndLogEx(NORMAL, "press " _YELLOW_("'enter'") " to cancel the command");
PrintAndLogEx(NORMAL, "WARNING: this may brick non-password protected chips!");
PrintAndLogEx(NORMAL, "Try reading block 7 before\n");
PrintAndLogEx(NORMAL, "Usage: lf t55xx recoverpw [r <mode>] [p password]");
PrintAndLogEx(NORMAL, "Usage: lf t55xx recoverpw [r <mode>] [p <password>]");
PrintAndLogEx(NORMAL, " password must be 4 bytes (8 hex symbols)");
PrintAndLogEx(NORMAL, " default password is 51243648, used by many cloners");
PrintAndLogEx(NORMAL, "Options:");
PrintAndLogEx(NORMAL, " h - this help");
print_usage_t55xx_downloadlink(T55XX_DLMODE_ALL);
PrintAndLogEx(NORMAL, " [password] - 4 byte hex value of password written by cloner");
PrintAndLogEx(NORMAL, " p <password> - 4 byte hex value of password written by cloner");
PrintAndLogEx(NORMAL, "");
PrintAndLogEx(NORMAL, "Examples:");
PrintAndLogEx(NORMAL, " lf t55xx recoverpw");
PrintAndLogEx(NORMAL, " lf t55xx recoverpw p 51243648");
PrintAndLogEx(NORMAL, " lf t55xx recoverpw r 3 p 51243648");
PrintAndLogEx(NORMAL, "");
return PM3_SUCCESS;
}
static int usage_t55xx_wipe() {
PrintAndLogEx(NORMAL, "Usage: lf t55xx wipe [h] [Q5] [p <password>]");
PrintAndLogEx(NORMAL, "Usage: lf t55xx wipe [h] [Q5] [p <password>] [c <blk0>]");
PrintAndLogEx(NORMAL, "This commands wipes a tag, fills blocks 1-7 with zeros and a default configuration block");
PrintAndLogEx(NORMAL, "Options:");
PrintAndLogEx(NORMAL, " h - this help");
PrintAndLogEx(NORMAL, " q - indicates to use the T5555 (Q5) default configuration block");
PrintAndLogEx(NORMAL, " h - this help");
PrintAndLogEx(NORMAL, " c <block0> - set configuration from a block0");
PrintAndLogEx(NORMAL, " q - indicates to use the T5555 (Q5) default configuration block");
PrintAndLogEx(NORMAL, "");
PrintAndLogEx(NORMAL, "Examples:");
PrintAndLogEx(NORMAL, " lf t55xx wipe - wipes a t55x7 tag, config block 0x000880E0");
PrintAndLogEx(NORMAL, " lf t55xx wipe q - wipes a t5555 Q5 tag, config block 0x6001F004");
return PM3_SUCCESS;
}
static int usage_lf_deviceconfig() {
static int usage_t55xx_deviceconfig() {
PrintAndLogEx(NORMAL, "Sets t55x7 timings for direct commands. The timings are set here in Field Clocks (FC), \nwhich is converted to (US) on device");
PrintAndLogEx(NORMAL, "Usage: lf t55xx deviceconfig [r <mode>] a <gap> b <gap> c <gap> d <gap> e <gap> f <gap> g <gap> [p]");
PrintAndLogEx(NORMAL, "Options:");
@ -310,7 +312,6 @@ static int usage_lf_deviceconfig() {
PrintAndLogEx(NORMAL, " f <8..255> - Set write TWO gap (1 of 4 only)");
PrintAndLogEx(NORMAL, " g <8..255> - Set write THREE gap (1 of 4 only)");
PrintAndLogEx(NORMAL, " p - persist to flashmemory");
// print_usage_t55xx_downloadlink(); // does not apply to config
PrintAndLogEx(NORMAL, " z - Set default t55x7 timings (use p to save if required)");
PrintAndLogEx(NORMAL, "");
PrintAndLogEx(NORMAL, "Examples:");
@ -319,49 +320,184 @@ static int usage_lf_deviceconfig() {
PrintAndLogEx(NORMAL, "");
return PM3_SUCCESS;
}
static int usage_t55xx_protect() {
PrintAndLogEx(NORMAL, "This command set or unsets the pwd bit on T5577.");
PrintAndLogEx(NORMAL, "Usage: lf t55xx protect [r <mode>] [p <password>] [o] [n <new_password>]");
PrintAndLogEx(NORMAL, "Options:");
PrintAndLogEx(NORMAL, " p <password> - OPTIONAL password (8 hex characters)");
PrintAndLogEx(NORMAL, " o - OPTIONAL override safety check");
PrintAndLogEx(NORMAL, " n <new password> - new password");
print_usage_t55xx_downloadlink(T55XX_DLMODE_SINGLE);
PrintAndLogEx(NORMAL, "");
PrintAndLogEx(NORMAL, "Examples:");
PrintAndLogEx(NORMAL, " lf t55xx protect n 01020304 - sets new password to 01020304");
PrintAndLogEx(NORMAL, " lf t55xx protect p 11223344 - use pwd 11223344 to set newpwd to 00000000");
PrintAndLogEx(NORMAL, "");
return PM3_SUCCESS;
}
static int CmdHelp(const char *Cmd);
static bool t55xxVerifyWrite( uint8_t block, bool page1, bool usepwd, uint8_t override, uint32_t password, uint8_t downlink_mode, uint32_t data) {
//Password mode
if (usepwd) {
// try reading the config block and verify that PWD bit is set before doing this!
if (override == 0) {
if (AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, false, 0, downlink_mode) == false)
return false;
static bool t55xxProtect(bool lock, bool usepwd, uint8_t override, uint32_t password, uint8_t downlink_mode, uint32_t new_password ) {
if (tryDetectModulation(downlink_mode,T55XX_DontPrintConfig) == false) {
PrintAndLogEx(NORMAL, "Safety Check: Could not detect if PWD bit is set in config block. Exits.");
return false;
} else {
PrintAndLogEx(NORMAL, "Safety Check: PWD bit is NOT set in config block. Reading without password...");
usepwd = false;
}
} else if (override == 1) {
PrintAndLogEx(NORMAL, "Safety Check Overriden - proceeding despite risk");
}
PrintAndLogEx(INFO, "Checking current block0");
bool testmode = false;
uint32_t block0 = 0;
int res = T55xxReadBlockEx(T55x7_CONFIGURATION_BLOCK, T55x7_PAGE0, usepwd, override, password, downlink_mode, false);
if (res != PM3_SUCCESS) {
PrintAndLogEx(WARNING, "fail to read current block0, use `p` password parameter ?");
return false;
}
if (AquireData(page1, block, usepwd, password, downlink_mode) == false)
if (GetT55xxBlockData(&block0) == false)
return false;
if (block == 0 && page1 == false) {
if (tryDetectModulation(downlink_mode,T55XX_DontPrintConfig) == false) {
PrintAndLogEx(WARNING, "Could not detect modulation automatically. Try setting it manually with \'lf t55xx config\'");
return false;
}
uint32_t old = block0;
bool isPwdBitAlreadySet = (block0 >> (32-28) & 1);
if (isPwdBitAlreadySet) {
PrintAndLogEx(INFO, "PWD bit is already set");
usepwd = true;
}
if (DecodeT55xxBlock() == false)
return false;
if (lock) {
// set pwd bit
block0 |= 1 << 4;
} else {
block0 &= ~(1 << 4);
}
PrintAndLogEx(INFO, " old %08X vs %08X", old, block0);
// compare...
uint32_t readblock = 0;
if (GetT55xxBlockData(&readblock) == false)
return false;
return (readblock == data);
// write new password
if ( t55xxWrite(T55x7_PWD_BLOCK, T55x7_PAGE0, usepwd, testmode, password, downlink_mode, new_password ) != PM3_SUCCESS ) {
PrintAndLogEx(ERR, "Failed writing new pwd");
return false;
} else {
PrintAndLogEx(SUCCESS, "Wrote new password");
}
// password bit already set
// write b 7 new key old_pwd
// validate b 7 new_key old_pwd
// write b0 new_key
// validate b0 new_key
// write b7 new key
// validate b7 (no key)
// write b0 (no key)
// validate b0 w new key
// validate new password
uint32_t curr_password = (isPwdBitAlreadySet) ? new_password : password;
if (t55xxVerifyWrite(T55x7_PWD_BLOCK, T55x7_PAGE0, usepwd, override, curr_password, downlink_mode, new_password) == false) {
PrintAndLogEx(WARNING, "Could not validate the new password write. aborting.");
return false;
} else {
PrintAndLogEx(SUCCESS, "Validated new password");
}
// write config
if ( t55xxWrite(T55x7_CONFIGURATION_BLOCK, T55x7_PAGE0, usepwd, testmode, curr_password, downlink_mode, block0 ) != PM3_SUCCESS ) {
PrintAndLogEx(ERR, "Failed writing modified configuration block %08X", block0);
return false;
} else {
PrintAndLogEx(SUCCESS, "Wrote modified configuration block");
}
// validate new config. If all went well, card should now demand pwd, hence override = 0.
override = 0;
if (t55xxVerifyWrite(T55x7_CONFIGURATION_BLOCK, T55x7_PAGE0, true, override, new_password, downlink_mode, block0) == false) {
PrintAndLogEx(WARNING, "Could not validate pwd bit set on configuration block. aborting.");
return false;
} else {
PrintAndLogEx(SUCCESS, "New configuration block " _YELLOW_("%08X")"password " _YELLOW_("%08X"), block0, new_password);
PrintAndLogEx(SUCCESS, "Success, tag is locked");
return true;
}
}
bool t55xxVerifyWrite(uint8_t block, bool page1, bool usepwd, uint8_t override, uint32_t password, uint8_t downlink_mode, uint32_t data) {
uint32_t read_data = 0;
int res = T55xxReadBlockEx(block, page1, usepwd, override, password, downlink_mode, false);
if (res == PM3_SUCCESS) {
if (GetT55xxBlockData(&read_data) == false)
return false;
} else if ( res == PM3_EWRONGANSVER) {
// could't decode. Lets see if this was a block 0 write and try read/detect it auto.
// this messes up with ppls config..
if (block == 0 && page1 == false) {
PrintAndLogEx(INFO, "Block0 write detected, running `detect` to see if validation is possible (pwd == %08X)", password);
bool got_modulation = false;
for ( uint8_t m = 0; m < 4; m++) {
if (AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, true, password, m) == false) {
PrintAndLogEx(INPLACE, ".");
continue;
}
if (tryDetectModulation(m, true) == false) {
PrintAndLogEx(INPLACE, ".");
continue;
} else {
got_modulation = true;
PrintAndLogEx(NORMAL, "");
break;
}
}
if (got_modulation == false)
return false;
return t55xxVerifyWrite(block, page1, usepwd, 2, password, downlink_mode, data);
}
}
return (read_data == data);
}
int t55xxWrite(uint8_t block, bool page1, bool usepwd, bool testMode, uint32_t password, uint8_t downlink_mode, uint32_t data) {
uint8_t flags;
flags = (usepwd) ? 0x1 : 0;
flags |= (page1) ? 0x2 : 0;
flags |= (testMode) ? 0x4 : 0;
flags |= (downlink_mode << 3);
/*
OLD style
arg0 = data, (4 bytes)
arg1 = block (1 byte)
arg2 = password (4 bytes)
flags = data[0] (1 byte)
new style
uses struct in pm3_cmd.h
*/
t55xx_write_block_t ng;
ng.data = data;
ng.pwd = password;
ng.blockno = block;
ng.flags = flags;
PacketResponseNG resp;
clearCommandBuffer();
SendCommandNG(CMD_LF_T55XX_WRITEBL, (uint8_t *)&ng, sizeof(ng));
if (!WaitForResponseTimeout(CMD_LF_T55XX_WRITEBL, &resp, 2000)) {
PrintAndLogEx(ERR, "Error occurred, device did not ACK write operation.");
return PM3_ETIMEOUT;
}
return resp.status;
}
void printT5xxHeader(uint8_t page) {
@ -481,7 +617,7 @@ static int CmdT55xxSetConfig(const char *Cmd) {
}
break;
case 'r':
errors = param_getdec(Cmd, cmdp + 1,&downlink_mode);
errors = param_getdec(Cmd, cmdp + 1, &downlink_mode);
if (downlink_mode > 3)
downlink_mode = 0;
if (!errors)
@ -530,35 +666,42 @@ static int CmdT55xxSetConfig(const char *Cmd) {
return printConfiguration(config);
}
int T55xxReadBlock(uint8_t block, bool page1, bool usepwd, uint8_t override, uint32_t password, uint8_t downlink_mode) {
return T55xxReadBlockEx(block, page1, usepwd, override, password, downlink_mode, true);
}
int T55xxReadBlockEx(uint8_t block, bool page1, bool usepwd, uint8_t override, uint32_t password, uint8_t downlink_mode, bool verbose) {
//Password mode
if (usepwd) {
// try reading the config block and verify that PWD bit is set before doing this!
// override = 1 (override and display)
// override = 2 (override and no display)
if (override == 0) {
if (!AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, false, 0, downlink_mode)) return PM3_ESOFT;
if (AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, false, 0, downlink_mode) == false)
return PM3_ERFTRANS;
if (!tryDetectModulation(downlink_mode,T55XX_DontPrintConfig)) {
PrintAndLogEx(NORMAL, "Safety Check: Could not detect if PWD bit is set in config block. Exits.");
return PM3_ESOFT;
if (tryDetectModulation(downlink_mode, false) == false) {
PrintAndLogEx(WARNING, "Safety Check: Could not detect if PWD bit is set in config block. Exits.");
return PM3_EWRONGANSVER;
} else {
PrintAndLogEx(NORMAL, "Safety Check: PWD bit is NOT set in config block. Reading without password...");
PrintAndLogEx(WARNING, "Safety Check: PWD bit is NOT set in config block. Reading without password...");
usepwd = false;
page1 = false; // ??
}
} else if (override == 1) {
// Show only if first for command i.e. override = 1 (override and display) override = 2 (override and dont display)
PrintAndLogEx(NORMAL, "Safety Check Overriden - proceeding despite risk");
PrintAndLogEx(INFO, "Safety Check Overriden - proceeding despite risk");
}
}
if (!AquireData(page1, block, usepwd, password, downlink_mode))
return PM3_ESOFT;
if (AquireData(page1, block, usepwd, password, downlink_mode) == false)
return PM3_ERFTRANS;
if (!DecodeT55xxBlock())
return PM3_ESOFT;
if (DecodeT55xxBlock() == false)
return PM3_EWRONGANSVER;
if (verbose)
printT55xxBlock(block);
printT55xxBlock(block);
return PM3_SUCCESS;
}
@ -730,7 +873,6 @@ static int CmdT55xxDetect(const char *Cmd) {
uint32_t password = 0;
uint8_t cmdp = 0;
uint8_t downlink_mode = 0;
uint8_t dl_mode = 0;
while (param_getchar(Cmd, cmdp) != 0x00 && !errors) {
switch (tolower(param_getchar(Cmd, cmdp))) {
@ -765,22 +907,28 @@ static int CmdT55xxDetect(const char *Cmd) {
return PM3_ESOFT;
if (useGB == false) {
for (dl_mode = downlink_mode; dl_mode < 4; dl_mode++) {
found = AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, usepwd, password, dl_mode);
if (tryDetectModulation(dl_mode,T55XX_PrintConfig)) {
dl_mode = 4;
found = true;
//ICEMAN STRANGE
for (uint8_t m = downlink_mode; m < 4; m++) {
if (AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, usepwd, password, m) == false) {
continue;
}
else found = false;
if (tryDetectModulation(m, T55XX_PrintConfig)) {
m = 4;
found = true;
} else {
found = false;
}
if (!try_all_dl_modes) dl_mode = 4;
if (try_all_dl_modes == false)
m = 4;
}
} else {
found = tryDetectModulation(downlink_mode,T55XX_PrintConfig);
found = tryDetectModulation(downlink_mode, T55XX_PrintConfig);
}
if (!found)
if (found == false)
PrintAndLogEx(WARNING, "Could not detect modulation automatically. Try setting it manually with " _YELLOW_("\'lf t55xx config\'"));
return PM3_SUCCESS;
@ -959,7 +1107,10 @@ bool tryDetectModulation(uint8_t downlink_mode, bool print_config) {
config.Q5 = tests[0].Q5;
config.ST = tests[0].ST;
config.downlink_mode = downlink_mode;
if (print_config) printConfiguration(config);
if (print_config)
printConfiguration(config);
return true;
}
@ -981,7 +1132,9 @@ bool tryDetectModulation(uint8_t downlink_mode, bool print_config) {
} else {
PrintAndLogEx(NORMAL, "--[%d]---------------", i + 1);
}
if (print_config) printConfiguration(tests[i]);
if (print_config)
printConfiguration(tests[i]);
}
}
return retval;
@ -1234,14 +1387,14 @@ int special(const char *Cmd) {
}
int printConfiguration(t55xx_conf_block_t b) {
PrintAndLogEx(NORMAL, " Chip Type : %s", (b.Q5) ? "T5555(Q5)" : "T55x7");
PrintAndLogEx(NORMAL, " Modulation : %s", GetSelectedModulationStr(b.modulation));
PrintAndLogEx(NORMAL, " Bit Rate : %s", GetBitRateStr(b.bitrate, (b.block0 & T55x7_X_MODE && (b.block0 >> 28 == 6 || b.block0 >> 28 == 9))));
PrintAndLogEx(NORMAL, " Inverted : %s", (b.inverted) ? _GREEN_("Yes") : "No");
PrintAndLogEx(NORMAL, " Offset : %d", b.offset);
PrintAndLogEx(NORMAL, " Seq. Term. : %s", (b.ST) ? _GREEN_("Yes") : "No");
PrintAndLogEx(NORMAL, " Block0 : 0x%08X", b.block0);
PrintAndLogEx(NORMAL, " DL Mode : %s",GetDownlinkModeStr (b.downlink_mode));
PrintAndLogEx(NORMAL, " Chip Type : %s", (b.Q5) ? "T5555(Q5)" : "T55x7");
PrintAndLogEx(NORMAL, " Modulation : %s", GetSelectedModulationStr(b.modulation));
PrintAndLogEx(NORMAL, " Bit Rate : %s", GetBitRateStr(b.bitrate, (b.block0 & T55x7_X_MODE && (b.block0 >> 28 == 6 || b.block0 >> 28 == 9))));
PrintAndLogEx(NORMAL, " Inverted : %s", (b.inverted) ? _GREEN_("Yes") : "No");
PrintAndLogEx(NORMAL, " Offset : %d", b.offset);
PrintAndLogEx(NORMAL, " Seq. Term. : %s", (b.ST) ? _GREEN_("Yes") : "No");
PrintAndLogEx(NORMAL, " Block0 : 0x%08X", b.block0);
PrintAndLogEx(NORMAL, " Downling Mode : %s", GetDownlinkModeStr (b.downlink_mode));
PrintAndLogEx(NORMAL, "");
return PM3_SUCCESS;
}
@ -1265,6 +1418,7 @@ static int CmdT55xxWakeUp(const char *Cmd) {
downlink_mode = param_get8ex(Cmd, cmdp + 1, 0, 10);
if (downlink_mode > 3)
downlink_mode = 0;
cmdp += 2;
break;
default:
@ -1358,43 +1512,17 @@ static int CmdT55xxWriteBlock(const char *Cmd) {
}
if (errors || !gotdata) return usage_t55xx_write();
PacketResponseNG resp;
uint8_t flags;
flags = (usepwd) ? 0x1 : 0;
flags |= (page1) ? 0x2 : 0;
flags |= (testMode) ? 0x4 : 0;
flags |= (downlink_mode << 3);
char pwdStr[16] = {0};
snprintf(pwdStr, sizeof(pwdStr), "pwd: 0x%08X", password);
PrintAndLogEx(INFO, "Writing page %d block: %02d data: 0x%08X %s", page1, block, data, (usepwd) ? pwdStr : "");
/*
OLD style
arg0 = data, (4 bytes)
arg1 = block (1 byte)
arg2 = password (4 bytes)
flags = data[0] (1 byte)
new style
uses struct in pm3_cmd.h
*/
t55xx_write_block_t ng;
ng.data = data;
ng.pwd = password;
ng.blockno = block;
ng.flags = flags;
clearCommandBuffer();
SendCommandNG(CMD_LF_T55XX_WRITEBL, (uint8_t *)&ng, sizeof(ng));
if (!WaitForResponseTimeout(CMD_LF_T55XX_WRITEBL, &resp, 2000)) {
PrintAndLogEx(ERR, "Error occurred, device did not ACK write operation. (May be due to old firmware)");
return PM3_ETIMEOUT;
if ( t55xxWrite(block, page1, usepwd, testMode, password, downlink_mode, data) != PM3_SUCCESS ) {
PrintAndLogEx(ERR, "Write failed");
return PM3_ESOFT;
}
if (validate) {
//t55xxVerifyWrite( uint8_t block, bool page1, bool usepwd, uint8_t override, uint32_t password, uint8_t downlink_mode, uint32_t data) {
bool isOK = t55xxVerifyWrite(block, page1, usepwd, 1, password, downlink_mode, data);
if (isOK)
PrintAndLogEx(SUCCESS, "Write OK, validation succesful");
@ -2047,16 +2175,16 @@ char *GetDownlinkModeStr (uint8_t downlink_mode)
switch (downlink_mode) {
case T55XX_DLMODE_FIXED :
snprintf (retStr,sizeof(buf),"default/fixed bit length");
snprintf(retStr, sizeof(buf),"default/fixed bit length");
break;
case T55XX_DLMODE_LLR :
snprintf (retStr,sizeof(buf),"long leading reference");
snprintf(retStr, sizeof(buf),"long leading reference");
break;
case T55XX_DLMODE_LEADING_ZERO :
snprintf (retStr,sizeof(buf),"leading zero reference");
snprintf(retStr, sizeof(buf),"leading zero reference");
break;
case T55XX_DLMODE_1OF4 :
snprintf (retStr,sizeof(buf),"1 of 4 coding reference");
snprintf(retStr, sizeof(buf),"1 of 4 coding reference");
break;
default:
snprintf(retStr, sizeof(buf), _RED_("(Unknown)"));
@ -2211,8 +2339,6 @@ static int CmdResetRead(const char *Cmd) {
if (errors) return usage_t55xx_resetread();
// PrintAndLogEx(INFO, "DL : %d\n", downlink_mode); // no value outside of debug
flags = downlink_mode << 3;
clearCommandBuffer();
@ -2232,11 +2358,11 @@ static int CmdResetRead(const char *Cmd) {
}
static int CmdT55xxWipe(const char *Cmd) {
char writeData[36] = {0};
char *ptrData = writeData;
uint32_t password = 0;
bool usepwd = false;
bool Q5 = false;
uint32_t password = 0, block0 = 0;
bool usepwd = false, Q5 = false, gotconf = false;
uint8_t cmdp = 0;
bool errors = false;
@ -2250,6 +2376,11 @@ static int CmdT55xxWipe(const char *Cmd) {
usepwd = true;
cmdp += 2;
break;
case 'c':
block0 = param_get32ex(Cmd, cmdp + 1, 0, 16);
gotconf = true;
cmdp += 2;
break;
case 'q':
Q5 = true;
cmdp++;
@ -2263,22 +2394,31 @@ static int CmdT55xxWipe(const char *Cmd) {
if (errors) return usage_t55xx_wipe();
// Try with the default password to reset block 0
// With a pwd should work even if pwd bit not set
PrintAndLogEx(INFO, "\nBeginning Wipe of a T55xx tag (assuming the tag is not password protected)\n");
PrintAndLogEx(INFO, "\nBegin wiping %s", (Q5)? "Q5 / T5555 tag" : "T55x7 tag");
if (usepwd) {
snprintf(ptrData, sizeof(writeData), "b 0 p %08x ", password);
} else {
snprintf(ptrData, sizeof(writeData), "b 0 ");
// default config blocks.
if (gotconf == false) {
block0 = (Q5) ? 0x6001F004 : 0x000880E0;
}
if (Q5)
snprintf(ptrData + strlen(writeData), sizeof(writeData) - strlen(writeData), "d 6001F004");
else
snprintf(ptrData + strlen(writeData), sizeof(writeData) - strlen(writeData), "d 000880E0");
char msg[80] = {0};
if (gotconf)
snprintf(msg, sizeof(msg), "User provided configuration block %08X", block0);
else
snprintf(msg, sizeof(msg), "Default configation block %08X", block0);
PrintAndLogEx(INFO, "%s", msg);
// Creating cmd string for write block :)
snprintf(ptrData, sizeof(writeData), "b 0 ");
if (usepwd) {
snprintf(ptrData + strlen(writeData), sizeof(writeData) - strlen(writeData), "p %08x ", password);
}
snprintf(ptrData + strlen(writeData), sizeof(writeData) - strlen(writeData), "d %08X", block0);
if (CmdT55xxWriteBlock(ptrData) != PM3_SUCCESS)
PrintAndLogEx(WARNING, "Warning: error writing blk 0");
@ -2296,7 +2436,7 @@ static int CmdT55xxWipe(const char *Cmd) {
if (config.downlink_mode != T55XX_DLMODE_FIXED) { // Detect found a different mode so card must support
snprintf(ptrData, sizeof(writeData), "b 3 1 d 00000000");
if (CmdT55xxWriteBlock(ptrData) != PM3_SUCCESS)
PrintAndLogEx(WARNING, "Warning: error writing blk 3 page 1 (config)");
PrintAndLogEx(WARNING, "Warning: failed writing block 3 page 1 (config)");
memset(writeData, 0x00, sizeof(writeData));
}
return PM3_SUCCESS;
@ -2390,10 +2530,9 @@ static int CmdT55xxChkPwds(const char *Cmd) {
PrintAndLogEx(SUCCESS, "\nFound a candidate [ " _YELLOW_("%08X") " ]. Trying to validate", resp.oldarg[1]);
if (AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, true, resp.oldarg[1], downlink_mode)) {
found = tryDetectModulation(downlink_mode,T55XX_PrintConfig);
found = tryDetectModulation(downlink_mode, T55XX_PrintConfig);
if (found) {
PrintAndLogEx(SUCCESS, "Found valid password: [ " _GREEN_("%08X") " ]", resp.oldarg[1]);
// T55xx_Print_DownlinkMode(downlink_mode);
} else {
PrintAndLogEx(WARNING, "Check pwd failed");
@ -2446,7 +2585,6 @@ static int CmdT55xxChkPwds(const char *Cmd) {
found = tryDetectModulation(dl_mode,T55XX_PrintConfig);
if (found) {
PrintAndLogEx(SUCCESS, "Found valid password: [ " _GREEN_("%08X") " ]", curr_password);
// T55xx_Print_DownlinkMode(dl_mode);
dl_mode = 4; // Exit other downlink mode checks
c = keycount; // Exit loop
}
@ -2740,7 +2878,6 @@ bool tryDetectP1(bool getData) {
(DemodBufferLen == 32 || DemodBufferLen == 64)) {
return true;
}
}
// try NRZ clock detect. it could be another type even if successful.
@ -2822,7 +2959,8 @@ static int CmdT55xxDetectPage1(const char *Cmd) {
useGB = true;
cmdp++;
break;
case 'r':
case 'r':
//ICEMAN STRANGE
downlink_mode = param_get8ex(Cmd, cmdp + 1, 0, 10);
if (downlink_mode == 4)
try_all_dl_modes = true;
@ -2876,7 +3014,7 @@ static int CmdT55xxSetDeviceConfig(const char *Cmd) {
while (param_getchar(Cmd, cmdp) != 0x00 && !errors) {
switch (tolower(param_getchar(Cmd, cmdp))) {
case 'h':
return usage_lf_deviceconfig();
return usage_t55xx_deviceconfig();
case 'a':
errors |= param_getdec(Cmd, cmdp + 1, &startgap);
cmdp += 2;
@ -2928,7 +3066,7 @@ static int CmdT55xxSetDeviceConfig(const char *Cmd) {
}
//Validations
if (errors || cmdp == 0) return usage_lf_deviceconfig();
if (errors || cmdp == 0) return usage_t55xx_deviceconfig();
t55xx_configurations_t configurations = {{{0}, {0}, {0}, {0}}};
@ -2984,6 +3122,67 @@ static int CmdT55xxSetDeviceConfig(const char *Cmd) {
return PM3_SUCCESS;
}
static int CmdT55xxProtect(const char *Cmd) {
bool errors = false, usepwd = false, gotnewpwd = false;
uint32_t password = 0, new_password = 0;
uint8_t override = 0;
uint8_t cmdp = 0;
uint8_t downlink_mode = 0;
while (param_getchar(Cmd, cmdp) != 0x00 && !errors) {
switch (tolower(param_getchar(Cmd, cmdp))) {
case 'h':
return usage_t55xx_protect();
case 'o':
override = 2;
cmdp++;
break;
case 'n':
new_password = param_get32ex(Cmd, cmdp + 1, 0, 16);
gotnewpwd = true;
cmdp += 2;
break;
case 'p':
password = param_get32ex(Cmd, cmdp + 1, 0, 16);
usepwd = true;
override = 1;
cmdp += 2;
break;
case 'r':
//ICEMAN STRANGE
downlink_mode = param_get8ex(Cmd, cmdp + 1, 0, 10);
if (downlink_mode > 3)
downlink_mode = 0;
cmdp += 2;
break;
default:
PrintAndLogEx(WARNING, "Unknown parameter '%c'", param_getchar(Cmd, cmdp));
errors = true;
break;
}
}
if (gotnewpwd == false)
return usage_t55xx_protect();
if (errors || cmdp == 0) return usage_t55xx_protect();
// sanity check.
if (SanityOfflineCheck(false) != PM3_SUCCESS)
return PM3_ESOFT;
// lock
bool res = t55xxProtect(true, usepwd, override, password, downlink_mode, new_password );
// unlock
// res = t55xxProtect(false, usepwd, override, password, downlink_mode, new_password );
if (res == false) {
PrintAndLogEx(WARNING, "Command failed. Did you run `lf t55xx detect` before?");
return PM3_ESOFT;
}
return PM3_SUCCESS;
}
static command_t CommandTable[] = {
{"help", CmdHelp, AlwaysAvailable, "This help"},
{"bruteforce", CmdT55xxBruteForce, IfPm3Lf, "<start password> <end password> Simple bruteforce attack to find password"},
@ -2991,9 +3190,10 @@ static command_t CommandTable[] = {
{"chk", CmdT55xxChkPwds, IfPm3Lf, "Check passwords from dictionary/flash"},
{"detect", CmdT55xxDetect, AlwaysAvailable, "[1] Try detecting the tag modulation from reading the configuration block."},
{"deviceconfig", CmdT55xxSetDeviceConfig, IfPm3Lf, "Set/Get T55XX device configuration (startgap, writegap, write0, write1, readgap"},
{"p1detect", CmdT55xxDetectPage1, IfPm3Lf, "[1] Try detecting if this is a t55xx tag by reading page 1"},
{"dump", CmdT55xxDump, IfPm3Lf, "[password] [o] Dump T55xx card block 0-7. Optional [password], [override]"},
{"info", CmdT55xxInfo, AlwaysAvailable, "[1] Show T55x7 configuration data (page 0/ blk 0)"},
{"p1detect", CmdT55xxDetectPage1, IfPm3Lf, "[1] Try detecting if this is a t55xx tag by reading page 1"},
{"protect", CmdT55xxProtect, IfPm3Lf, "Password protect tag"},
{"read", CmdT55xxReadBlock, IfPm3Lf, "b <block> p [password] [o] [1] -- Read T55xx block data. Optional [p password], [override], [page1]"},
{"resetread", CmdResetRead, IfPm3Lf, "Send Reset Cmd then lf read the stream to attempt to identify the start of it (needs a demod and/or plot after)"},
{"recoverpw", CmdT55xxRecoverPW, IfPm3Lf, "[password] Try to recover from bad password write from a cloner. Only use on PW protected chips!"},

View file

@ -13,6 +13,7 @@
#include "common.h"
#define T55x7_CONFIGURATION_BLOCK 0x00
#define T55x7_PWD_BLOCK 0x07
#define T55x7_TRACE_BLOCK1 0x01
#define T55x7_TRACE_BLOCK2 0x02
#define T55x7_PAGE0 0x00
@ -142,7 +143,12 @@ void printT5xxHeader(uint8_t page);
void printT55xxBlock(uint8_t blockNum);
int printConfiguration(t55xx_conf_block_t b);
int T55xxReadBlock(uint8_t block, bool page1, bool usepwd, uint8_t override, uint32_t password, uint8_t downlink_mode);
bool t55xxVerifyWrite( uint8_t block, bool page1, bool usepwd, uint8_t override, uint32_t password, uint8_t downlink_mode, uint32_t data);
int T55xxReadBlock(uint8_t block, bool page1, bool usepwd, uint8_t override, uint32_t password, uint8_t downlink_mode);
int T55xxReadBlockEx(uint8_t block, bool page1, bool usepwd, uint8_t override, uint32_t password, uint8_t downlink_mode, bool verbose);
int t55xxWrite(uint8_t block, bool page1, bool usepwd, bool testMode, uint32_t password, uint8_t downlink_mode, uint32_t data);
bool GetT55xxBlockData(uint32_t *blockdata);
bool DecodeT55xxBlock(void);
bool tryDetectModulation(uint8_t downlink_mode, bool print_config);